Railway journal-wedge-grinding device



Dec. 23, 1930.

c. TAGGART RAILWAY JOURNAL WEDGE GRINDING DEVICE Filed April 29, 1927 4 Sheets-Sheet l lo 4 12 i 2 z i I l l l l l I I I l I i l 1 INVENTOR.

$041 Map A TT ORNE Y.

Dec. 23, 1930. c. TAGGAR'I ,1

RAILWAY JOURNAL WEDGEGRINDING DEVICE Filed April 29, 1927 4 Sheets-Sheet 2 Dec. 23, 1930. c. TAGGART 3 RAILWAY JOURNAL WEDGE GRINDING DEVICE Filed April 29, 1927 4 Sheets-Sheet 5 Dec. 23, 1930. c. TAGGART RAILWAY JOURNAL WEDGE GRINDING DEVICE Filed April 29, 1927 4 Sheets-Sheet 4 a INVENTOR BY M a;

ATTORNEY Patented Dec. 23, 1930 D STATES CHARLES TAGGART, F DETROIT, MICHIGAN RAILWAY JOURNAL-WEDGE-GRINDING DEVICE Application filed April 29,

The object of my invention is to provide a grinding machine adapted for re-surfacing railway journal wedge blocks, as are ordinarily used in the construction of railway car a trucks.

Another object is to produce a grinding machine which is especially adapted for holding and grinding railway journal wedge blocks and which, by the structure of the device, will itself determine the curve to be formed on the inserted wedge block when used in combination with the grinding device.

A further object is to produce a grinding machine frame adapted for holding castings and operating in combination with an ordinary grinding machine section of any design or type, which will allow the installation of my device without interfering with the operating mechanism of the grinding wheel.

A still further object is to produce a special grinding device for re-surfacing and crowning the top surface of railway journal wedge blocks, and so constructed as to be operative for various types and shaped curve sections as may be required on different types of journal wedge blocks.

A still further object is to produce a grinding device that is adapted for operation in combination with an ordinary grinding wheel that is simple in construction, easily and efficiently operated, and can be manufactured at a low cost.

These several objects are attained in the preferred form by the construction and arrangement of parts more fully hereinafter set forth.

Similar parts on all drawings are marked by similar numerals.

Figure 1 is the front view of my device, showing the supporting table and the operating slides mounted thereon when the machine is fully assembled and used in combination with an ordinary grinding machine.

Figure 2 is a top view of the device as shown in Figure 1, showing the general arrangement of the operating carriage and the journal wedge block mounted therein.

Figure 3 is an end view of the device as shown in Figure 1, showing the relative position of the operating parts and the applica- 1927. Serial No. 187,473.

tion thereof to a standard grinding machine.

Figure 4 is a sectional view taken on line ie-4 of Figure 2, showing the general construction and arrangement of the operating parts and the application of the device as applied to the grinding wheel.

Figure 5 is a sectional view taken on line 55 of Figure 2, showing the structure of the detachable slide-block and the means for retaining the movable slide thereon.

Figure 6 is an edge view of a standard railway car journal box wedge used in general construction in the journal bearings and shows the curved upper surface required for car adjustment.

Figure 7 is an end view of the journal box wedge shown in Figure 6, showing its general structure and design, to which my device must be made to conform.

I will now describe more fully the detail construction of my device, referring to the drawings and the marks thereon.

My device is made for and is especially adapted to re-surfacing and re-crowning the top surface of a railway truck journal wedge block, which has hitherto been discarded when the crowned section becomes somewhat flattened or worn under usage, no means having yet been devised for salvaging these parts or re-crowning the surface thereon.

Figures 6 and 7 of the drawing clearly illustrate a journal wedge block similar to those used in the railway truck journal bearing construction, and clearly show the curved surface thereon, which must be maintained in order to produce freedom in operation of the truck frames when mounted therein on the connecting ournal bearings. The curved surface on the journal wedge va ries and is designed to different curves as may be required to suit the needs and requirements of various types of car trucks, and my device is also designed and adapted to use in grinding any of the journal wedge blocks to any of the standard specified curves.

The general construction of my device comprises: Ii rigid base block mounted and supported by suitable legs and carries mounted thereon an adjustable and detachable base block so designed and arranged that the relative position thereon may be readily adjusted in a vertical direction and for the purpose of raising or lowering the base block to any desired height within a certain limit. Slidabl mounted on top of the base block is a journal wedge carriage, so arranged and designed and connected to the base block as to allow it to be moved freely endwise thereon and to be adjusted sidewise to various consecutive positions, the journal wedge carriage being provided with means for rigidly rot ..ing a \\Gtl7'9 block therein and also means for operating the carriage manually lene'thwise of the supported base block. The whole device. as described, is to be positioned and installed in combination with a grinding wheel, such as a standard grinder or any type of grinding machine capable of being positioned to engage the top surface of the inclosed wedge and provided with sufiicient clearance to allow a side-wise adjustment of the carriage for engaging the entire length of the inclosed wedge block with the surface of the grinding wheel.

My invention, however, is not confined to the device itself as herein shown, but to be used in combination with any grinding device having a grinding wheel positioned thereon, having the required clearance. The base block 1 is preferably made of a solid piece of cast metal, formed of a rectangular wedge shaped section. and extends the entire length and width of the device for providing rigid, fixed base for mounting the moving parts thereon, the bottom surface 4. of the base block is positioned in a horizontal plane and has fixedly attached thereto supporting legs -2. The legs 2- are preferably made of cast metal of a design to provide rigidity and stiffness in the frame section, the legs being attached to the base block by the screws 3. Any type of leg may be used equally as well, which provides the required rigidity for firmly holding the block in a fixed position and providing a rigid, solid base. The top surface -5 of the base block 1 is beveled and forms a sloping plane surface thereon, extending from one side of the base block to the other, one edge of the base block being thicker than the edge on the opposite side. Fixedly mounted within the base block 1 are two vertical pins 7-, one placed in each side of the base block 1 and projecting from the top surface therefrom. The pins 7 may be attached to the base block l by either a pressed fit or any other means for holding them rigidly therein. Also mounted on the top sloping surface 5 of the base block is an adjusting wedge section 6. The adjusting wedge 6 is a rectangular-shaped block section of approximately the same size as the base block 1 when fitted thereon. The wedge section is mounted on the base block 1 with the thick edge positioned along the side of and coinciding with the thin edge of the base block 1. The wedge shaped member is formed of two plane surfaces, and engages and fits the sloping top surface of the base. The two beveled members, when placed together and adjusted to any position, will produce a uniform thickness throughout, and provide a horizontal top surface on the wedged member at any position it may be placed or adjusted on the base block 1. Near each edge of the wedge is a slotted hole 8, formed through the wedge section positioned to engage the guide pins 7- as are mounted in the base block and project therefrom. he slots 8 are made of a width equal to the dimensions of the pin, and are elongated within the wedge section along a line at right angles to the axis of the base. The slots 8 provide means for firmly holding the wedge block in true alinement upon the supporting base, yet allow it to be adjusted sidewise thereon, as may be required for changing and varying the height of the top surface of the wedge. Fixedly mounted to the base block 1 near the center thereof, along the thin edge of the block, is an adjusting screw bearing 9, preferably made as a part of the base section. Mounted within the bearing 9 is an adjusting screw 10, which is rotatably mounted therein, and which engages the adjusting wedge 6 by means of screw threads 11, capable of moving the slide 6 sidewise over the base section, the screw 10- is turned within the bearing for adjusting the wedge block thereon. Fixedly attached to the end of the screw 10 is a hand wheel 12- providing for turning the adjusting screw 10 and adjusting the wed e to any position desired. Mounted on the top surface of the adjusted wedge section 6 is a detachable base block 18, also formed of a rectangular outer design having sizes and dimensions the same as the adjacent wedge block and base. The said detachable base block is of a design having a Hat, plane, bottom surface l5 thereon for fitting and engaging the top surface of the wedge. Said base block is also provided with an upper curved surface l6 thereon, shaped and designed to some pro-determined curve, the axis of which is parallel to a plane passing along the center line of the device, lengthwise of the frame. At each side of the de tachable base block is formed a socket recess -1 l, fitting and engaging the top end of the guide pins 7- for rigidly holding and retaining the detachable base block in a rigid fixed position above the base block l but capable of being adjusted to various heights by the adjustment of the intervening wedge block 6. Along the top curved surface is formed a series of rectangular key recesses 17--, which extend the entire length of the base block, parallel to the axis of the a carriage block 18.

curve and parallel to each other. The position of the key recesses 17 are pre-determined, and depend upon the width of the grinding wheel 28, with which this device is to be used, but in no case should said key recesses be spaced at a greater distance apart than the thickness of the grinding wheel. Slidably mounted on the top curved surface 16 is The carriage block 18 is a channel shaped member, prefer ably made of cast metal; the channel section being formed on the top side thereof by the two side-ribs 19 projecting from opposite sides of the block and extending the entire length thereof. The ribs l9 are of a height sufficient for receiving standard journal bearing wedge 20 therein and providing means for firmly locking the wedge therein. Through one of the rib members 19 is mounted a set screw 21 positioned for engaging one edge of the journal wedge block for rigidly clamping the work within the carriage. Along the under side of the carriage are formed slide members -22, one slide positioned near each edge of the member and extending the entire length of the carriage, parallel with the ribs 19 and also positioned parallel with the key recesses 17'- formed in the top curved surface l6- of the base block. Fixedly mounted along the bottom side of the carriage 18 is a guide key -23, extending nearly the entire length of the carriage 18-, and of dimensions to accurately fit and en gage one of the key recesses 17 in the top surface of the base block, but at all times capable of freely sliding therein. The key 23- acts as a guide for the carriage 18, and allows it to move in a longitudinal direction along the base, in any chosen position thereon. The carriage 18 may be adjusted sidewise over the upper curved surface 16 of the base block for engaging any one of the key recesses 17, andwhich provides means for changing position of the carriage from one side of the base section 13 to the other. Attached to one end of the carriage -18 is an operating arm 24 which projects therefrom along the line parallel to the attached key -.23-, and is provided with a handle bar 25- at the end thereof. The handle 25 provides means for manually operating the carriage '18 lengthwise of the base 13 when the carriage is placed in any position depending upon which key recesses it engages therewith. Fixedly attached to each side of the carriage -18- is a dust apron 26, which projects over the top of the base 13- and prevents particles from falling thereon, leaving the slides as free as possible from contact with foreign matters.

It can readily be seen that when my device is fixedly installed beneath the grinding wheel 28, that by placing within the carriage a journal wedge block and rigidly clamping the same therein, that by adjusting the base block 13 by means of the intervening wedge 6- until the top surface of the journal wedge block 20 engages the surface of the grinding wheel 28 that the carriage 18 may then be move-d lengthwise of the base block and beneath the grinding wheel rim in a manner to out and grind a straight path lengthwise of the journal block wedge, and by removing the carriage 18 sidewise on the base block 13 until the key 23 engages the next adjacent key recess 17 therein, and the process repeated, that the moving of the carriage lengthwise of the base block will grind and cut successive strips along the work as the carriage is moved beneath the grinding wheel by manual means or otherwise. It can readily be seen that when the curved surface base block -13 is 'pre-determined, that the movements of the carriage 18 throughout the successive recesses, a corresponding curved surface will be formed along the top of the journal wedge block, and that by changing the curved surface -16-, a corresponding change in curve would result on the wedge block also.

It is the purpose of this invention to make the base block 13-- detachable and the device is provided with several similar blocks by each having a different curved surface 16 thereon, such that any required curve to be made along the surface of the journal block may be readily obtained by interchanging of the detachable base blocks -13,

using the block thereon having the required curved surface.

While I have shown and illustrated my device in a simplified form and design, I claim as my invention any device that would be substantially a substitution of parts therein shown. And while I have shown and illustrated a simplified means of moving the carriage18- over the curved surface of the base block by manual operation, it is understood that it includes any means that might suitably be applied for sliding the carriage backwards and forwards thereon.

Having fully described my device, what I claim is my invention and desire to secure by Letters Patent, is

-1. A grinding device adapted for grinding curved surfaces on journal wedge blocks, to

be used in combination with a grinding wheel, v

comprising a base block having suitable means for supporting same, a detachable base plate mounted thereon, sald detachable base plate being provided with an upper curved surface, a carriage block shdably mounted upon the curved surface of the detachable base block and so deslgned as to allow free movement thereof in a direction parallel to the elements of the curved surface, means attached to the carriage block for guiding said carriage along the surface of thedetachable base in various parallel paths thereon, said carriage block is designed to receive and retain a journal wedge block therein.

2. fl. device adapted for grinding curved surfae' r ournal wedge blocks to be used in combination with a grinding wheel, com prising); a rigid base bloclz havingsuitable supports attached thereto, an adjustable detachable base section mounted above the base block, in -ans attached thereto for adjusting the r l heightof the det ehable base to the base block, said detachable base being formed with an upper curved surface and provided with a series of parallel key grooves, a carriage block slidablv mounted on the curved surface of the detachable base and is provided with a projecting kev member fixedly attached thereto for engaging, any chosen one of th lrev grooves for determining the position of the carriage thereon. said carriage is capable of beinp; moved endwise alone; the curved surface the full length of the de achable base, means for attachingthe iournail wedge block on the upper surface of the carria A grinding. machine adapted for grindins curved surfaces on journal wedsle block to be used in combination with grinding wheel. comprising a rigid base block having suitable supporting members attached thereto. a detachable base section mounted on the upper surface of the base block and provided with means for adjusting the vertical position thereof in relation to said base block, said dotach able base section is formed with. an upper surface, generated by a curve havingparallel elements. a series of parallel key recesses formed in the curved surface of said detachable section, the kev recesses are positioned parallel, to each other and parallel to the elements of the curved surface and or; tend the full length of the detachable base section, a sliding; carriage mounted on the curved surface of said detachable base, capable of being" moved endwise or sidewise over said curved surface of the detachable base, a guide ltev mounted in the bottom section of the carriage for engaging any one of the key recesses free to slide the entire length thereof, for holding the said carriage in true alinement along any elementof the curve, locking means formed on the top surfa e of the carriage bloel: for engaging and lorxina' the journal wedge therein, and in a manner to allow the upper surface of said journal wedge to be brought in contact with rotating grinding; wheel may be mounted thercabove.

A, grinding device adapted for grinding curved surfaces on railway journal lJOX wedges and to be used in combination with a orinding wheel of suitable structure for placaid wheel above grinding device, com

n i as:

base block is formed with an upper wedgeshapcd plane surface thereon, a detachable base section mounted above the said base block, meals fixedly mounted within said base block for rigidly retaining the said de tachable base section thereon and adjusting wedge mounted between the base bloc and the detachable base section in a manne capable of adjusting the height of the detaclu 7. 1e base block, said detachable base block is formed with an upper curved surface generated by a urve formed of parallel. elements,

i s of lrey recess grooves formed. at unifo m intervals within the curved surface, said he": "ecesses are all positioned parallel to each other and parallel to the elements of the surface and extend the entire length table base block, a carriage block oablv mounted on the curved top surface of the adjustable base section, said carriage is ned as to fit and engage the curved section of the adjustable l sioewise thereon. said carriage is j'u'ovided with a fixed guide lzev mounted within the bottom surface, so designed to be one with anv one of the series of key recs, s within the curved surface of the detachable base and capable of free movements therein. n'ieans attached thereto for sliding: said car riage block over the curved surface lengthwise of the lrev recesses, the carriage is provided with projecting and engagingmembers for receiving and retaining a journal wedac bloel: therein and means for securelv clamping: said journal wedge block within the carriage.

5. A grinding device adapted for ,Qfrinding pro-determined curves on surfaces of metal parts to be used in combination wi h a grinding wheel, comprising a rigid base block having; suitable support members attached thereto for holding: the same in a horizontal position, said base block having the top side formed of a true plane surface positioned thereon at an angle with the horizontal. and forming a sloping plane surface, a detachable base section mounted thereon, said base section formed with the bottom side a flat plr surface and its top side forming a curve generated by a series of parallel elements similar to a cylindrical curve, .aid detachable section is so mounted on the. base blocl' as to be securely and firmly held in position thereon, yet capable of vertical adjustment therewith, a. wedpje-shapeo section placed betv-Jeen the bg se block and the adjustable base section, said wedge section being of a design and dimensions to fit and ene'asre the adjacent surface of the base block and the base section. and at all times support the base section in a horizontal position, said wedge be capable of adjustment edecwise there; for detel-mining and adjusting the height of the base section and means attached thereto for adjusting and holding the wedge section in any desired position, said base section is formed with a series of key grooves placed at uniformly spaced intervals over its upper curved surface, said key grooves are all positioned parallel to each other and parallel to the elements of the curve and extend the'full length of the base section, a carriage block mounted on said curved section and fitted thereto, to engage the curved surface when moved either endwise or sidewise thereon, projecting members mounted on the top of said carriage block and positioned to receive therein metal plate section upon which a curved surface is to be ground, a key mounted in the bottom surface of said block suitable for engaging any chosen one of the key grooves, depending upon the position of the carriage and means attached to the said carriage for sliding same lengthwise of th curved base section. 6. A grinding machine adapted for grinding pro-determined curved surfaces on metal castings, comprising rigid base block mounted on suitable rigid support members, said base block formed with a sloping plane top surface, said plane being slightly inclined, with a horizontal, from one side of said base block to the other, adjustable base section movably mounted above said base block, but rigidly held in the position thereon by ver tical dowel pins fixedly mounted within said base block and projecting through engaging sockets in the adjustable base in such a manner as to allow for vertical adjustment of the base section thereon, an adjusting wedgeshaped plate member placed between the sloping base block and adjustable base section, said wedge bein formed with flat surface for engaging and fitting the adjacent surfaces of the wedge-block and adjustablebase section, and at all times retain the adjustable base section in a horizontal position, said wedge section is capable of being moved in a manner to raise or lower the adjustable base section, a feed screw mounted along the edge of the base section and engaging said wedge section in a manner for adjusting position thereof, to raise or lower the adjustable base section to any position desired, said adjustable base block is formed with the upper surface thereof, generated by a curve having parallel elements, similar to a circle or ellipse, and is provided with a series of key recesses placed at uniform intervals along the curved surface, said key recesses being positioned parallel with each other and parallel to the elements of the curved surface and extend the entire length of the adjustable base block, a carriage slidably mounted on the top curved surface of said adjustable base block, said carriage is provided with a key member fixedly attached to the bottom thereof and capable of being engaged with any one of the key recesses, depending upon the position of the carriage block when resting on the curved surface of the adjustable base, said carriage is capable of being moved endwise along said key recesses the full length thereof, means attached to said carriage for sliding same lengthwise of the curved base section, said carriage block is designed with projecting members and locking means for receiving and retaining a metal machine part therein, upon which a curved surface is to be ground and a rotatably mounted grinding wheel positioned above said carriage, capable of engaging and grinding the upper surface of the machine casting when placed therein, for grinding a curved surface thereon as the car riage is moved backward and forward thereunder throughout the series of parallel key recesses. V

7 A grinding device adapted for grinding predetermined curves on metal parts to be used in combination with a rotating grinding wheel, comprised of a carriage block capable of receiving and locking a metal casting therein, said carriage block being slidably mounted over a pre-determined curved base section, said base section having the curved surface generated by parallel elements, said carriage so designed and engaged with curved base section as to be capable of sliding thereon at various predetermined positions along the elements of the curve and in a manner that the curve on the base section will determine the curve to be generated on the upper surface of the metal casting held in the carriage when brought in contact with the surface of a grinding wheel. 8. A grinding device adapted for grinding predetermined curved surfaces on the metal castings to be used in combination with the rotating grinding wheel, comprising the carriage block for holding the casting, and a base section for supporting and guiding said carriage block, said base section being formed with a pre-determined curved surface, generated with parallel elements, means attached thereto for guiding the carriage along chosen elements of the curve.-

In witness whereof I sign these specifications.

CHARLES TAGGART. 

